Home / 12,742.62-19,105.65-4,422

Finding the Fourth Proportional to 12,742.62, 19,105.65 and 4,422

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Solution

The fourth proportional to 12,742.62, 19,105.65 and 4,422 is: 6,630.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.62 : 19,105.65 = 4,422 : x
  2. Step 2: Convert to fraction form
    12,742.62/19,105.65 = 4,422/x
  3. Step 3: Cross multiply
    12,742.62x = 19,105.65 × 4,422
  4. Step 4: Simplify right side
    12,742.62x = 84,485,184.30
  5. Step 5: Solve for x
    x = 84,485,184.30/12,742.62
  6. Step 6: Final answer
    x = 6,630.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.